I have a mac pro running leopard, ati x1900 and 2 dell 24" wide monitors.
I can't seem to get them to match each other, and they differ quite a bit from what gets printed by my printer.

I tried to calibrate in photoshop cs3, but my contrast setting is greyed out since they are connected by dvi cable. This is the default according to Dell's website.

On top of all this, they were purchased at different times, so I am sure that the brightness is different between them.

Is there a way to calibrate without having to spend money on spyder pro, or should I just cough up the cash and buy the thing?